Testing tool and testing method thereof

A testing tool for testing inward deformation of a test panel cover, the testing tool comprising:

• a tool body, the test panel cover being detachably disposed on the tool body;
• a panel imitation member disposed on the tool body, the panel imitation member being contained between the tool body and the test panel cover when the test panel cover is disposed on the tool body;
• an indicating device disposed on the tool body;
• and
• a probe device disposed in the panel imitation member, the probe device comprising:
• a probe elastically disposed through the panel imitation member between an initial position and a triggering position and coupled to the indicating device, the probe extending out from the panel imitation member to abut against the test panel cover when the probe is located at the initial position;
• and
• a conductive member disposed under the probe and coupled to the indicating device, the probe contacting with the conductive member to electrically conduct the indicating device when the test panel cover is sunken inward to contact with the panel imitation member so as to drive the probe to the triggering position.